BodyB1242
CautionSeverity: Caution - get it checked when you can
Left rearview mirror warning light failure
Key terms: Control module: a small computer that runs one part of the car
1What it means in plain English
A body system has a fault. Depending on the make, this range can include airbags and seat belts, windows, locks and climate control, and also charging, brake, oil or coolant sensors.
2Common causes
- Wiring or connector fault
- Faulty sensor or switch
- Water or corrosion in a connector
- Control module fault
- Low battery voltage
3Can I drive?
Do not assume this code is safe to drive. If it concerns the brakes, brake vacuum, charging/alternator, engine oil or coolant, have it diagnosed before driving. Airbags or seat belts may not work in a crash, and a brake or charging fault can leave the car unsafe or stranded. For convenience systems (windows, locks, climate), have it checked when convenient.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 22
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | B1242 | DFC Of Open Circuit Error Of Nox Sensor Signal Brand | Body |
| Mercedes-Benz | B1242 | No description available | Body |
| Chery | B1242 | Passenger Front Airbag Short to Ground Brand | Body |
| Chrysler | B1242 | No description available | Body |
| Daewoo | B1242 | No description available | Body |
| DFFS | B1242 | Left rearview mirror warning light failure Brand | Body |
| GM | B1242 | No description available | Body |
| Holden | B1242 | Compact Disc Player Focus Brand | Body |
| Honda | B1242 | No description available | Body |
| Hyundai | B1242 | No description available | Body |
| Land Rover | B1242 | No description available | Body |
| Mahindra | B1242 | Passenger Airbag Deactivation Switch short to ground Brand | Body |
| Opel | B1242 | No description available | Body |
| Peugeot | B1242 | No description available | Body |
| Proton | B1242 | No description available | Body |
| Saab | B1242 | No description available | Body |
| MG (SAIC) | B1242 | Passenger Deactivation Switch Short to Ground Brand | Body |
| Smart | B1242 | No description available | Body |
| Sprinter | B1242 | No description available | Body |
| Subaru | B1242 | No description available | Body |
| Suzuki | B1242 | Knee Air Bag Resistance too Low (Driver Side) Brand | Body |
| Toyota | B1242 | Left rearview mirror warning light failure Brand | Body |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Related codes
Browse Bxxx codes or B124xx codes.